McDATA® 4Gb SAN Switch for HP p-Class BladeSystem Installation Guide (AA-RW1XC-TE, November 2006)

McDATA® 4Gb SAN Switch for HP p-Class BladeSystem installation guide 13
System Fault LED (amber)
The System Fault LED illuminates to indicate an over temperature condition or a Power-on Self Test (POST)
error. Also illuminated on an internal firmware error (heartbeat blink 2), voltage fault, or corrupt
configuration error (heartbeat blink 4).
Heartbeat LED (green)
The Heartbeat LED indicates the status of the internal switch processor and the results of the POST.
Following a normal power-up, the Heartbeat LED blinks about once per second to indicate that the switch
passed the POST and that the internal switch processor is running. In maintenance mode, the Heartbeat
LED illuminates continuously. See ”Heartbeat LED blink patterns” on page 38 for more information about
Heartbeat LED blink patterns.
Power LED (green)
The Power LED indicates the voltage status at the switch logic circuitry. During normal operation, this LED
illuminates to indicate that the switch logic circuitry is receiving the proper DC voltages. When the switch is
in maintenance mode, this LED is extinguished.
Maintenance button
The Maintenance button shown in Figure 2 is a dual-function momentary switch on the front panel. Its
purpose is to reset the switch or to place the switch in maintenance mode. Maintenance mode sets the IP
address to 10.0.0.1 and provides access to the switch for maintenance purposes when flash memory or
the resident configuration file is corrupted. See ”Recovering a switch using maintenance mode” on
page 43 for more information about using maintenance mode. The Maintenance button can be used if the
user forgets the switch IP address or admin account password.
Resetting a switch
Press and hold the Maintenance button with a pointed tool for less than two seconds to reset the switch.
The switch will respond as follows:
• All switch LEDs will be illuminated, then the System Fault LED is extinguished, leaving only the Power
LED illuminated.
• After approximately 1 minute, the POST begins.
• When the POST is complete, the Power LED is illuminated.
Placing the switch in maintenance mode
To place the switch in maintenance mode, perform the following procedure:
1. Isolate the switch from the fabric.
2. Press and hold the Maintenance button with a pointed tool for 10 seconds. The maintenance mode
firmware initializes.
To exit Maintenance mode and return to normal operation, press and release the Maintenance button
momentarily to reset the switch.